How long did The Undertaker wrestle in WWE?

The Undertaker is one of the biggest names in WWE history. His incredible undefeated streak at WrestleMania is probably the most iconic record of all time.

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Why did The Undertaker not fight Andre the Giant in his career? What would Andre the Giant think of The Undertaker's love and respect that wrestlers had for him? - Quora

How long did The Undertaker wrestle in WWE?

The physical change of 'The Undertaker', the legendary WWE wrestler and what he's doing after retirement